Spring bed-bottom.



W. F. KUNKEL.

SPRING BED BOTTOM.'

APPLICATION FILED FEB. 8| 1912. 1,150.87.

Patented Aug. 24, 1915.

awww/1410@ WILLIAM F. KUNKEL, OF MILWAUKEE, WISCONSIN.

SPRING BED-BOTTOM.

Specification of Letters Patent.

Patented Aug. 24, 1915.

Application filed February 8', 1912. Serial N o. 676,265.

To all whom it may concern.'

Be it known that I, lVrLLrAM F. KUNKEL, 'a citizen of the United States,residing at Milwaukee, county of Milwaukee, and State of Wisconsin, haveinvented new and useful Improvements in Spring Bed-Bottoms, of which thefollowing is a specification.

My invention relates to improvements in spring bed bottoms, withparticular reference to that class of such devices in which the marginsof the spring are turned upwardly for the purpose of retaining amattress in position.

The ob] ect of my invention is to simplify the construction of bedbottoms of the described class, whereby bed bottoms having up -turnedwoven wire springs may be formed without increasing the number of partsand with very little increase in the eX- pense of construction over whatis required for bed bottoms having ordinary flat springs.

In the drawing the gure illustrates in perspective, one end portion of abed bottom embodying my invention.

My improved bed bottom is formed with a frame compo-'sed of side bars A,A, and end bars of angle iron having a down-turned flange B and ahorizontal flange C. The horizontal flange is provided at each end withintegral upwardly projecting lips or members D. These end bars may beformed of any ordinary piece of angle iron of the required length bycutting out an end section from each end of the flanges B and bendingthe ends of the other flange upwardly to form the members D. A wovenwire spring E is adjusted over the upper surface of the flange C at eachend of the bed frame, and its side margins are turned upwardly andlapped upon the inner surface of the member D. The, spring is thensecured to the flange C and members D by a clamping member F, havingup-turned integral end portions G. This clamping member is adapted tosnugly fit between the upturned end portions D and may be secured bybolts or rivets to said members D and to the flange C, the ends of thewoven wire spring being securely clamped between the clamping member andthe members C and D.

It will of course be understood that the respective ends of the bottomframe are formed alike, each comprising but two pieces of material, oneof which is shaped to form the members B, C and D, and the other ofwhich is shaped to form the members F and G. I am therefore able toconstruct bed bottoms of this type with the same facility that flat bedbottoms have heretofore been constructed and substantially the onlydifference in expense consists in the additional material required forthe up-turned portions. The cost of constructing and assembling is notmaterially increased. It will also be observed that by forming the11p-turned members D and G integrally with the members C and F,'astructure of great strength and rigidity is provided. This is importantfor the reason that the strains exerted by the woven wire are heavy,such wire being secured in position under high tension.

I claim:-

1. A metallic frame for a spring bed bottom, having an angle iron endmember provided with a horizontal flange upturned at each end, incombinati-on with a woven wire spring having its ends lapped upon saidhorizontal flange and upon the upturned end portions, a retaining memberhaving a horizontal portion and up-turned end portions fitting betweenthe upturned end portions of the angle iron fiange and connectedtherewith in clamping relation to the ends of the woven wire spring.

2. A metallic frame for ay spring bed bottom, having an angle iron endmember rigidly connected with the side bars and provided with ahorizontal flange having integral upturned end po-rtions, in combinationwith a woven` wire spring having its end portion lapped upon saidhorizontal flanges and upon the inner faces of the upturned endportions, and rigidly secured thereto.

In testimony whereof I aliiX my signature in the presence of twowitnesses.

WILLIAM F. KUNKEL.

Witnesses:

LEVERETT C. WHEELER, I. D. BREMER.

Copies of this patent may be obtained for iive cents each, by addressingthe Commissioner of Patents.

Washington, D. C.

